About Me

Barrett Larson, MD, specializes in pulmonary and critical care medicine at Avera Medical Group Pulmonary & Sleep Medicine in Sioux Falls, SD. This health care field focuses on treating conditions related to the pulmonary and respiratory system, which involves structures that help you breathe well.

So when it comes to caring for the lungs, trachea and related structures, trust Dr. Larson for effective solutions for:

  • Asthma
  • COPD
  • Coughing
  • Emphysema
  • Interstitial lung disease
  • Lung cancer
  • Lung damage post severe COVID-19
  • Lung nodules
  • Pneumonia
  • Pulmonary fibrosis

Treating Patients with Patience

“What I enjoy about being a doctor is the patient relationships you develop,” said Dr. Larson. “These relationships can last years to a lifetime, so it’s a rewarding part of the job.”

He understands a complex diagnosis can cause feelings of uncertainty, fear and helplessness. To instill a sense of hope and confidence, Dr. Larson educates each patient on their condition and course of treatment. He also believes in the importance of sitting with patients and allowing them to ask questions and air their concerns.

“One of the best ways people process something is by talking; expressing themselves,” he said. “I’m honored I can be there for them when they’re in that vulnerable place.”

Active Lifestyle

When he’s not working, Dr. Larson enjoys spending time with his family and investing his heart into their activities and goals. As for personal interests, you might find him outdoors either hunting, fishing or boating.

Experience

Education

University of South Dakota Sanford School of Medicine, Vermillion,, Medical School

Residency

Creighton University Medical Center, Omaha, NE, Internal Medicine

Fellowship

Creighton University Medical Center, Omaha, NE, Pulmonary and Critical Care

Professional Memberships

  • American College of Chest Physicians
  • Society of Critical Care Medicine
  • American College of Physicians
  • American Medical Association

Certifications

  • American Board of Internal Medicine, Critical Care Medicine
  • American Board of Internal Medicine, Pulmonary
  • American Board of Internal Medicine, Internal Medicine 

Reviews

We value patient feedback and are committed to providing you with information, so you can make informed decisions about your health care, physicians and other providers in your care journey. Patient ratings and comments are gathered from the post-visit experience survey. Learn more.

August 26, 2025
We feel very comfortable with Dr Larson, and are very satisfied with the care he provides. He always takes time to listen, and gives us time for questions. The nurse is an excellent nurse, who always goes the extra mile for her patients. A very good team of providers!!!
August 23, 2025
I greatly appreciate Dr. Larson taking the time to not only share my test results, but to also explain what they ment and how they related to Dr. Lason's opinions on treatment moving forward. Thank you Dr. Larson, for taking the time to listen and answering our questions.
August 09, 2025
Already have recommended him
August 09, 2025
Very thorough and explained all the testing I have had, and how it relates to y condition, even if he did not order the test. I have never had a physician be so thorough and explain how every test can help him determine the cause of my symptoms
July 31, 2025
I will recommend Dr. Larson to everybody I talk to
July 30, 2025
Dr Barrett Larson was wonderful. He gave me a full hour of his time and was very thorough. He was probably the best Dr I ever had.
July 27, 2025
Dr Larson was very kind and took the time to educate me on my issues.
July 26, 2025
It's great to have a doctor that is super knowledgeable in his field, has a great bedside manner, always educates me (and hubby) while answering my questions, and includes me/hubby in my healthcare decisions. I can breathe better because of him! Thanks Dr. B. Larson!!!
July 21, 2025
Dr Larson is the best!!
July 17, 2025
Never any problems
July 17, 2025
Dr Larson is very friendly and give you all the information you need.
July 14, 2025
Drive from Rapid to see Dr Larson. He truly seems to care and listens.
July 13, 2025
Dr. Larson has always showed concern for my overall health and how my asthma and meds/inhalers fit Into that.
July 13, 2025
I felt comfortable as Dr.Larson explained everything and actually showed me my lungs which was amazing and comforting as things looked good
July 12, 2025
Since this was my first visit Dr. Larson walked me step by step through what he was looking for in each of the testing results. I honestly felt like I had just taken a crash course in all things pulmonary. Dr. Larson is the best!
June 26, 2025
Dr Larson was one of the best doctors I have ever seen. He was courteous, knowledgeable, patient and had a plan for my concerns. He was absolutely amazing.
June 20, 2025
Was impressed with him knowledge and patience in knowing different ways to handle my problems
May 31, 2025
Dr spent a lot of time with me and explained everything in detail.
May 30, 2025
Quality care
May 30, 2025
Doctor Larson is extremely comfortable in conversation; explaining the results of tests very well and easy to understand.
May 11, 2025
Took alot of time to make sure I understood every thing didn't rush at all first time ever I think a Dr took that much to make sure I understand all of it
April 18, 2025
Dr Larson and his staff are very caring
April 17, 2025
Very professional, , explained everything very thoroughly.
April 13, 2025
Dr. Larson is awesome!! He is very knowledgeable and kind! I feel very comfortable in knowing that he is providing my pulmonary care and involved me in the future plan for monitoring my pulmonary nodules. I have a family history of lung cancer and he has made me feel more comfortable for the future.
April 10, 2025
Explained to me my CT SCAN
April 05, 2025
Dr Barrett Larson explained all my issues needing addressed. Spent as much time with me as needed. Very personal nice doctor
April 03, 2025
Exceptionally caring and professional !,
April 01, 2025
It was a lot of information and he took the time to really explain it to me in a way I would understand. After all the seriousness Dr. Larson made things really light by asking me my hobbies and what I do for fun. Kinda made me forget why I was there for a moment
March 17, 2025
He fully explained everything and answered the questions I had and made me feel right at ease.
March 14, 2025
My issues have become chronic over the past year and Dr. Larson listens and adapts to my needs accordingly.
March 13, 2025
Absolutely great experience
March 13, 2025
Dr Larson spends time and is very caring
March 06, 2025
I completely trust your doctors.
March 01, 2025
Took time to go through the cat scan with me slice by slice
February 28, 2025
Dr. Barrett is the greatest Pulmonologist in the world!
January 30, 2025
The doctor was really nice. We talked about my problem and he explained it in terms I understood.
January 19, 2025
Dr Larson did a very good job of explaining everything to me
January 19, 2025
Dr Larson is very thorough, good nice doctor who knows his stuff, very happy and grateful to have him as my pulmonologist!!
January 17, 2025
Explained things very well
January 09, 2025
I have recommended Dr Larson to my father.
January 08, 2025
Doctor Larson spends time with his pts. A doesn't rush thru appt.

Directory Disclaimers

This directory contains information about the provider members of Independent Health Care Associates, Avera Health and all Avera entities, members of the Avera Medical Group, and employed select providers with Avera McKennan, Sioux Falls, SD and Avera Marshall, Marshall, MN and physicians with hospital privileges at Avera St. Luke's, Aberdeen, SD; Avera Sacred Heart, Yankton, SD; Avera Queen of Peace, Mitchell, SD; Avera St. Mary's, Pierre, SD.

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